Index: lld/COFF/Driver.cpp
===================================================================
--- lld/COFF/Driver.cpp
+++ lld/COFF/Driver.cpp
@@ -10,13 +10,13 @@
 #include "Driver.h"
 #include "Config.h"
 #include "InputFiles.h"
-#include "Memory.h"
 #include "MinGW.h"
 #include "SymbolTable.h"
 #include "Symbols.h"
 #include "Writer.h"
 #include "lld/Common/Driver.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "lld/Common/Version.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/StringSwitch.h"
@@ -50,10 +50,6 @@
 Configuration *Config;
 LinkerDriver *Driver;
 
-BumpPtrAllocator BAlloc;
-StringSaver Saver{BAlloc};
-std::vector<SpecificAllocBase *> SpecificAllocBase::Instances;
-
 bool link(ArrayRef<const char *> Args, bool CanExitEarly, raw_ostream &Diag) {
   errorHandler().LogName = Args[0];
   errorHandler().ErrorOS = &Diag;
Index: lld/COFF/DriverUtils.cpp
===================================================================
--- lld/COFF/DriverUtils.cpp
+++ lld/COFF/DriverUtils.cpp
@@ -15,9 +15,9 @@
 
 #include "Config.h"
 #include "Driver.h"
-#include "Memory.h"
 #include "Symbols.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/BinaryFormat/COFF.h"
Index: lld/COFF/InputFiles.cpp
===================================================================
--- lld/COFF/InputFiles.cpp
+++ lld/COFF/InputFiles.cpp
@@ -11,10 +11,10 @@
 #include "Chunks.h"
 #include "Config.h"
 #include "Driver.h"
-#include "Memory.h"
 #include "SymbolTable.h"
 #include "Symbols.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "llvm-c/lto.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Triple.h"
Index: lld/COFF/Memory.h
===================================================================
--- lld/COFF/Memory.h
+++ /dev/null
@@ -1,52 +0,0 @@
-//===- Memory.h -------------------------------------------------*- C++ -*-===//
-//
-//                             The LLVM Linker
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// See ELF/Memory.h
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLD_COFF_MEMORY_H
-#define LLD_COFF_MEMORY_H
-
-#include "llvm/Support/Allocator.h"
-#include "llvm/Support/StringSaver.h"
-#include <vector>
-
-namespace lld {
-namespace coff {
-
-extern llvm::BumpPtrAllocator BAlloc;
-extern llvm::StringSaver Saver;
-
-struct SpecificAllocBase {
-  SpecificAllocBase() { Instances.push_back(this); }
-  virtual ~SpecificAllocBase() = default;
-  virtual void reset() = 0;
-  static std::vector<SpecificAllocBase *> Instances;
-};
-
-template <class T> struct SpecificAlloc : public SpecificAllocBase {
-  void reset() override { Alloc.DestroyAll(); }
-  llvm::SpecificBumpPtrAllocator<T> Alloc;
-};
-
-template <typename T, typename... U> T *make(U &&... Args) {
-  static SpecificAlloc<T> Alloc;
-  return new (Alloc.Alloc.Allocate()) T(std::forward<U>(Args)...);
-}
-
-inline void freeArena() {
-  for (SpecificAllocBase *Alloc : SpecificAllocBase::Instances)
-    Alloc->reset();
-  BAlloc.Reset();
-}
-}
-}
-
-#endif
Index: lld/COFF/SymbolTable.cpp
===================================================================
--- lld/COFF/SymbolTable.cpp
+++ lld/COFF/SymbolTable.cpp
@@ -11,9 +11,9 @@
 #include "Config.h"
 #include "Driver.h"
 #include "LTO.h"
-#include "Memory.h"
 #include "Symbols.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
Index: lld/COFF/Symbols.h
===================================================================
--- lld/COFF/Symbols.h
+++ lld/COFF/Symbols.h
@@ -12,8 +12,8 @@
 
 #include "Chunks.h"
 #include "Config.h"
-#include "Memory.h"
 #include "lld/Common/LLVM.h"
+#include "lld/Common/Memory.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/Object/Archive.h"
 #include "llvm/Object/COFF.h"
Index: lld/COFF/Symbols.cpp
===================================================================
--- lld/COFF/Symbols.cpp
+++ lld/COFF/Symbols.cpp
@@ -9,9 +9,9 @@
 
 #include "Symbols.h"
 #include "InputFiles.h"
-#include "Memory.h"
 #include "Strings.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
Index: lld/COFF/Writer.cpp
===================================================================
--- lld/COFF/Writer.cpp
+++ lld/COFF/Writer.cpp
@@ -12,11 +12,11 @@
 #include "DLL.h"
 #include "InputFiles.h"
 #include "MapFile.h"
-#include "Memory.h"
 #include "PDB.h"
 #include "SymbolTable.h"
 #include "Symbols.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringSwitch.h"
Index: lld/Common/CMakeLists.txt
===================================================================
--- lld/Common/CMakeLists.txt
+++ lld/Common/CMakeLists.txt
@@ -5,6 +5,7 @@
 add_lld_library(lldCommon
   Args.cpp
   ErrorHandler.cpp
+  Memory.cpp
   Reproduce.cpp
   Strings.cpp
   TargetOptionsCommandFlags.cpp
Index: lld/Common/Memory.cpp
===================================================================
--- /dev/null
+++ lld/Common/Memory.cpp
@@ -0,0 +1,23 @@
+//===- Memory.cpp ---------------------------------------------------------===//
+//
+//                             The LLVM Linker
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lld/Common/Memory.h"
+
+using namespace llvm;
+using namespace lld;
+
+BumpPtrAllocator lld::BAlloc;
+StringSaver lld::Saver{BAlloc};
+std::vector<SpecificAllocBase *> lld::SpecificAllocBase::Instances;
+
+void lld::freeArena() {
+  for (SpecificAllocBase *Alloc : SpecificAllocBase::Instances)
+    Alloc->reset();
+  BAlloc.Reset();
+}
Index: lld/ELF/Driver.cpp
===================================================================
--- lld/ELF/Driver.cpp
+++ lld/ELF/Driver.cpp
@@ -30,7 +30,6 @@
 #include "InputFiles.h"
 #include "InputSection.h"
 #include "LinkerScript.h"
-#include "Memory.h"
 #include "OutputSections.h"
 #include "ScriptParser.h"
 #include "Strings.h"
@@ -41,6 +40,7 @@
 #include "lld/Common/Args.h"
 #include "lld/Common/Driver.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "lld/Common/Threads.h"
 #include "lld/Common/Version.h"
 #include "llvm/ADT/StringExtras.h"
@@ -65,10 +65,6 @@
 Configuration *elf::Config;
 LinkerDriver *elf::Driver;
 
-BumpPtrAllocator elf::BAlloc;
-StringSaver elf::Saver{BAlloc};
-std::vector<SpecificAllocBase *> elf::SpecificAllocBase::Instances;
-
 static void setConfigs();
 
 bool elf::link(ArrayRef<const char *> Args, bool CanExitEarly,
Index: lld/ELF/DriverUtils.cpp
===================================================================
--- lld/ELF/DriverUtils.cpp
+++ lld/ELF/DriverUtils.cpp
@@ -14,8 +14,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "Driver.h"
-#include "Memory.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "lld/Common/Reproduce.h"
 #include "lld/Common/Version.h"
 #include "llvm/ADT/Optional.h"
Index: lld/ELF/GdbIndex.cpp
===================================================================
--- lld/ELF/GdbIndex.cpp
+++ lld/ELF/GdbIndex.cpp
@@ -15,7 +15,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "GdbIndex.h"
-#include "Memory.h"
+#include "lld/Common/Memory.h"
 #include "llvm/DebugInfo/DWARF/DWARFDebugPubTable.h"
 #include "llvm/Object/ELFObjectFile.h"
 
Index: lld/ELF/InputFiles.cpp
===================================================================
--- lld/ELF/InputFiles.cpp
+++ lld/ELF/InputFiles.cpp
@@ -10,11 +10,11 @@
 #include "InputFiles.h"
 #include "InputSection.h"
 #include "LinkerScript.h"
-#include "Memory.h"
 #include "SymbolTable.h"
 #include "Symbols.h"
 #include "SyntheticSections.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/CodeGen/Analysis.h"
 #include "llvm/DebugInfo/DWARF/DWARFContext.h"
Index: lld/ELF/InputSection.cpp
===================================================================
--- lld/ELF/InputSection.cpp
+++ lld/ELF/InputSection.cpp
@@ -12,13 +12,13 @@
 #include "EhFrame.h"
 #include "InputFiles.h"
 #include "LinkerScript.h"
-#include "Memory.h"
 #include "OutputSections.h"
 #include "Relocations.h"
 #include "SyntheticSections.h"
 #include "Target.h"
 #include "Thunks.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "llvm/Object/Decompressor.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Compression.h"
Index: lld/ELF/LinkerScript.cpp
===================================================================
--- lld/ELF/LinkerScript.cpp
+++ lld/ELF/LinkerScript.cpp
@@ -14,7 +14,6 @@
 #include "LinkerScript.h"
 #include "Config.h"
 #include "InputSection.h"
-#include "Memory.h"
 #include "OutputSections.h"
 #include "Strings.h"
 #include "SymbolTable.h"
@@ -22,6 +21,7 @@
 #include "SyntheticSections.h"
 #include "Target.h"
 #include "Writer.h"
+#include "lld/Common/Memory.h"
 #include "lld/Common/Threads.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringRef.h"
Index: lld/ELF/MarkLive.cpp
===================================================================
--- lld/ELF/MarkLive.cpp
+++ lld/ELF/MarkLive.cpp
@@ -22,13 +22,13 @@
 
 #include "InputSection.h"
 #include "LinkerScript.h"
-#include "Memory.h"
 #include "OutputSections.h"
 #include "Strings.h"
 #include "SymbolTable.h"
 #include "Symbols.h"
 #include "Target.h"
 #include "Writer.h"
+#include "lld/Common/Memory.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Object/ELF.h"
 #include <functional>
Index: lld/ELF/OutputSections.cpp
===================================================================
--- lld/ELF/OutputSections.cpp
+++ lld/ELF/OutputSections.cpp
@@ -10,11 +10,11 @@
 #include "OutputSections.h"
 #include "Config.h"
 #include "LinkerScript.h"
-#include "Memory.h"
 #include "Strings.h"
 #include "SymbolTable.h"
 #include "SyntheticSections.h"
 #include "Target.h"
+#include "lld/Common/Memory.h"
 #include "lld/Common/Threads.h"
 #include "llvm/BinaryFormat/Dwarf.h"
 #include "llvm/Support/Compression.h"
Index: lld/ELF/Relocations.cpp
===================================================================
--- lld/ELF/Relocations.cpp
+++ lld/ELF/Relocations.cpp
@@ -44,13 +44,13 @@
 #include "Relocations.h"
 #include "Config.h"
 #include "LinkerScript.h"
-#include "Memory.h"
 #include "OutputSections.h"
 #include "Strings.h"
 #include "SymbolTable.h"
 #include "SyntheticSections.h"
 #include "Target.h"
 #include "Thunks.h"
+#include "lld/Common/Memory.h"
 
 #include "llvm/Support/Endian.h"
 #include "llvm/Support/raw_ostream.h"
Index: lld/ELF/ScriptParser.cpp
===================================================================
--- lld/ELF/ScriptParser.cpp
+++ lld/ELF/ScriptParser.cpp
@@ -17,11 +17,11 @@
 #include "Driver.h"
 #include "InputSection.h"
 #include "LinkerScript.h"
-#include "Memory.h"
 #include "OutputSections.h"
 #include "ScriptLexer.h"
 #include "Symbols.h"
 #include "Target.h"
+#include "lld/Common/Memory.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/StringSet.h"
Index: lld/ELF/SymbolTable.cpp
===================================================================
--- lld/ELF/SymbolTable.cpp
+++ lld/ELF/SymbolTable.cpp
@@ -17,10 +17,10 @@
 #include "SymbolTable.h"
 #include "Config.h"
 #include "LinkerScript.h"
-#include "Memory.h"
 #include "Symbols.h"
 #include "SyntheticSections.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "lld/Common/Strings.h"
 #include "llvm/ADT/STLExtras.h"
 
Index: lld/ELF/SyntheticSections.cpp
===================================================================
--- lld/ELF/SyntheticSections.cpp
+++ lld/ELF/SyntheticSections.cpp
@@ -19,13 +19,13 @@
 #include "Config.h"
 #include "InputFiles.h"
 #include "LinkerScript.h"
-#include "Memory.h"
 #include "OutputSections.h"
 #include "Strings.h"
 #include "SymbolTable.h"
 #include "Target.h"
 #include "Writer.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "lld/Common/Threads.h"
 #include "lld/Common/Version.h"
 #include "llvm/BinaryFormat/Dwarf.h"
Index: lld/ELF/Thunks.cpp
===================================================================
--- lld/ELF/Thunks.cpp
+++ lld/ELF/Thunks.cpp
@@ -24,12 +24,12 @@
 #include "Thunks.h"
 #include "Config.h"
 #include "InputSection.h"
-#include "Memory.h"
 #include "OutputSections.h"
 #include "Symbols.h"
 #include "SyntheticSections.h"
 #include "Target.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "llvm/BinaryFormat/ELF.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/Endian.h"
Index: lld/ELF/Writer.cpp
===================================================================
--- lld/ELF/Writer.cpp
+++ lld/ELF/Writer.cpp
@@ -12,13 +12,13 @@
 #include "Filesystem.h"
 #include "LinkerScript.h"
 #include "MapFile.h"
-#include "Memory.h"
 #include "OutputSections.h"
 #include "Relocations.h"
 #include "Strings.h"
 #include "SymbolTable.h"
 #include "SyntheticSections.h"
 #include "Target.h"
+#include "lld/Common/Memory.h"
 #include "lld/Common/Threads.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringSwitch.h"
Index: lld/include/lld/Common/Memory.h
===================================================================
--- lld/include/lld/Common/Memory.h
+++ lld/include/lld/Common/Memory.h
@@ -21,20 +21,21 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLD_ELF_MEMORY_H
-#define LLD_ELF_MEMORY_H
+#ifndef LLD_COMMON_MEMORY_H
+#define LLD_COMMON_MEMORY_H
 
 #include "llvm/Support/Allocator.h"
 #include "llvm/Support/StringSaver.h"
 #include <vector>
 
 namespace lld {
-namespace elf {
 
 // Use this arena if your object doesn't have a destructor.
 extern llvm::BumpPtrAllocator BAlloc;
 extern llvm::StringSaver Saver;
 
+void freeArena();
+
 // These two classes are hack to keep track of all
 // SpecificBumpPtrAllocator instances.
 struct SpecificAllocBase {
@@ -56,12 +57,6 @@
   return new (Alloc.Alloc.Allocate()) T(std::forward<U>(Args)...);
 }
 
-inline void freeArena() {
-  for (SpecificAllocBase *Alloc : SpecificAllocBase::Instances)
-    Alloc->reset();
-  BAlloc.Reset();
-}
-} // namespace elf
 } // namespace lld
 
 #endif
Index: lld/wasm/Driver.cpp
===================================================================
--- lld/wasm/Driver.cpp
+++ lld/wasm/Driver.cpp
@@ -9,11 +9,11 @@
 
 #include "lld/Common/Driver.h"
 #include "Config.h"
-#include "Memory.h"
 #include "SymbolTable.h"
 #include "Writer.h"
 #include "lld/Common/Args.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "lld/Common/Threads.h"
 #include "lld/Common/Version.h"
 #include "llvm/ADT/Twine.h"
@@ -61,9 +61,7 @@
 
 } // anonymous namespace
 
-std::vector<SpecificAllocBase *> lld::wasm::SpecificAllocBase::Instances;
 Configuration *lld::wasm::Config;
-BumpPtrAllocator lld::wasm::BAlloc;
 
 bool lld::wasm::link(ArrayRef<const char *> Args, bool CanExitEarly,
                      raw_ostream &Error) {
Index: lld/wasm/InputFiles.cpp
===================================================================
--- lld/wasm/InputFiles.cpp
+++ lld/wasm/InputFiles.cpp
@@ -11,10 +11,10 @@
 
 #include "Config.h"
 #include "InputSegment.h"
-#include "Memory.h"
 #include "Strings.h"
 #include "SymbolTable.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "llvm/Object/Binary.h"
 #include "llvm/Object/Wasm.h"
 #include "llvm/Support/raw_ostream.h"
Index: lld/wasm/Memory.h
===================================================================
--- lld/wasm/Memory.h
+++ /dev/null
@@ -1,52 +0,0 @@
-//===- Memory.h -------------------------------------------------*- C++ -*-===//
-//
-//                             The LLVM Linker
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// See WASM/Memory.h
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLD_WASM_MEMORY_H
-#define LLD_WASM_MEMORY_H
-
-#include "llvm/Support/Allocator.h"
-#include "llvm/Support/StringSaver.h"
-#include <vector>
-
-namespace lld {
-namespace wasm {
-
-extern llvm::BumpPtrAllocator BAlloc;
-extern llvm::StringSaver Saver;
-
-struct SpecificAllocBase {
-  SpecificAllocBase() { Instances.push_back(this); }
-  virtual ~SpecificAllocBase() = default;
-  virtual void reset() = 0;
-  static std::vector<SpecificAllocBase *> Instances;
-};
-
-template <class T> struct SpecificAlloc : public SpecificAllocBase {
-  void reset() override { Alloc.DestroyAll(); }
-  llvm::SpecificBumpPtrAllocator<T> Alloc;
-};
-
-template <typename T, typename... U> T *make(U &&... Args) {
-  static SpecificAlloc<T> Alloc;
-  return new (Alloc.Alloc.Allocate()) T(std::forward<U>(Args)...);
-}
-
-inline void freeArena() {
-  for (SpecificAllocBase *Alloc : SpecificAllocBase::Instances)
-    Alloc->reset();
-  BAlloc.Reset();
-}
-} // namespace wasm
-} // namespace lld
-
-#endif
Index: lld/wasm/OutputSections.cpp
===================================================================
--- lld/wasm/OutputSections.cpp
+++ lld/wasm/OutputSections.cpp
@@ -11,10 +11,10 @@
 
 #include "Config.h"
 #include "InputFiles.h"
-#include "Memory.h"
 #include "OutputSegment.h"
 #include "SymbolTable.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "lld/Common/Threads.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/LEB128.h"
Index: lld/wasm/SymbolTable.cpp
===================================================================
--- lld/wasm/SymbolTable.cpp
+++ lld/wasm/SymbolTable.cpp
@@ -10,9 +10,9 @@
 #include "SymbolTable.h"
 
 #include "Config.h"
-#include "Memory.h"
 #include "Strings.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 
 #include <unordered_set>
 
Index: lld/wasm/Writer.cpp
===================================================================
--- lld/wasm/Writer.cpp
+++ lld/wasm/Writer.cpp
@@ -10,12 +10,12 @@
 #include "Writer.h"
 
 #include "Config.h"
-#include "Memory.h"
 #include "OutputSections.h"
 #include "OutputSegment.h"
 #include "SymbolTable.h"
 #include "WriterUtils.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Memory.h"
 #include "lld/Common/Threads.h"
 #include "llvm/Support/FileOutputBuffer.h"
 #include "llvm/Support/Format.h"